Changed accessibility properies to meet W3C standard.

Source/modules/accessibility/AXNodeObject.cpp

Index: Source/modules/accessibility/AXNodeObject.cpp
diff --git a/Source/modules/accessibility/AXNodeObject.cpp b/Source/modules/accessibility/AXNodeObject.cpp
index f1aa72513048d0ece5da01c61bd8f687213e7dbc..7c93026469ede0767dc827637fc857fb49cabfb3 100644
--- a/Source/modules/accessibility/AXNodeObject.cpp
+++ b/Source/modules/accessibility/AXNodeObject.cpp
@@ -241,7 +241,7 @@ AccessibilityRole AXNodeObject::determineAccessibilityRoleUtil()
     }
     if (isHTMLSelectElement(*node())) {
         HTMLSelectElement& selectElement = toHTMLSelectElement(*node());
-        return selectElement.multiple() ? ListBoxRole : PopUpButtonRole;
+        return (selectElement.multiple() || selectElement.size() > 1) ? ListBoxRole : PopUpButtonRole;
     }
     if (isHTMLTextAreaElement(*node()))
         return TextAreaRole;
@@ -1190,14 +1190,21 @@ String AXNodeObject::stringValue() const
             if (!overriddenDescription.isNull())
                 return overriddenDescription;
         }
-        if (!selectElement.multiple())
-            return selectElement.value();
-        return String();
+        return selectElement.value();
     }
 
     if (isTextControl())
         return text();
 
+    // Handle other HTML input elements that aren't text controls, like date and time
+    // controls, by returning the string value, with the exception of checkboxes
+    // and radio buttons (which would return "on").
+    if (node && isHTMLInputElement(node)) {
+        HTMLInputElement* input = toHTMLInputElement(node);
+        if (input->type() != InputTypeNames::checkbox && input->type() != InputTypeNames::radio)
+            return input->value();
+    }
+
     // FIXME: We might need to implement a value here for more types
     // FIXME: It would be better not to advertise a value at all for the types for which we don't implement one;
     // this would require subclassing or making accessibilityAttributeNames do something other than return a